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"Your eyepiece is half the telescope, use the best -- Tele Vue" -
said Jack Marling, founder of Lumicon Co. "Fast" telescopes (f/4-f/6)
of all types -- refractors, reflectors, Schmidt Newtonians, Mak-Newtonians
require the finest eyepieces for sharp, full field viewing. Every Tele Vue
eyepiece is personally tested at f/4 by our quality control staff to ensure the
sharpest full field possible. It is the nature of optics that being the best in
fast scopes also always assures the best performance in "slow" scopes.
While every Tele Vue eyepiece type will yield the critical center sharpness so
necessary for planetary viewing and splitting double stars, observers get the
added bonus of a sharp wide field and comfortable eye relief with the different
design models. The Tele Vue 50° Plössls are patented to be sharper over a larger
field than any competing brands of Plössls or Orthos. Tele Vue 62° DeLite, 68°
Panoptics, 72° Delos, 82° Naglers and 100° Ethos are the eyepieces of choice, along with the 50°
Nagler 3mm--6mm zoom, for full field sharpness. The finest performance requires
the finest materials such as high index lanthanum and fluorite type glasses, in
some cases costing up to 15x more than ordinary glass types. At Tele Vue we ask
"how can we make it better", rather than "how can we make it
cheaper." We think you'll agree that the views are worth it.

Design

An optical design incorporates a number of lens elements utilizing different
glass materials and shapes. Elements cemented together are called a group. Each
Tele Vue design is configured to achieve the sharpest full field, with the
number of elements and groups minimized, while yielding the largest possible
true fields and eye relief. Some design types are "scaled", that is,
one form is "scaled" to provide a range of focal lengths. Note that
eye relief, size and weight "scale" along, but image quality and
apparent field remain constant. Examples of "scaled" Tele Vue designs
are Plössls, Panoptics and the Nagler type 5. Other designs set a particular
characteristic, such as eye relief, and tailor each focal length in the series
as individual designs. The size, weight and number of lens elements will vary
little within a given series. Examples are: DeLite and Delos, with 20mm eye relief,
Nagler type 4 models with approximately 18mm eye relief, Nagler type 6 eyepieces
with 12mm eye relief, and Ethos eyepieces with 15mm eye relief.

We are gratified that Tele Vue eyepiece designs over the past 35-years have
reached almost iconic status. New innovative designs, improved materials and
coating techniques have allowed Tele Vue to continually produce what many
consider to be the best eyepieces available in the world. As a result,
discontinued eyepieces, such as the "Wide Fields" and original Nagler and Nagler
type 2 models, have often become collector items that can sometimes sell for
more than their original cost. The "Backyard Astronomers Guide" notes: "Al
Nagler has introduced more innovations in telescope eyepiece design than anyone
else in the history of amateur astronomy." Indeed, every Tele Vue Plössl, Wide
Field, Panoptic, and Nagler eyepiece is based on patents by Al Nagler.
Other accessories -- such as Barlows, Powermates, and the Paracorr (coma
corrector for fast Newtonians) -- are also original Nagler designs. Paul
Dellechiaie, long-time Tele Vue employee working under Al's guidance, designed
the Ethos, Delos and DeLite series.

Every Tele Vue eyepiece is fully multi-coated, has blackened
lens edges and anti-reflection threads for maximum contrast. Chrome plated
barrels, which resist scratching and marring better than black anodized barrels, include safety undercuts and threads for filters. Upper barrels are
black anodized aluminum with a rubber grip ring, engraved identification, and
fold down rubber eyeguards. All Nagler type 4, DeLite, and Delos models include an
adjustable eyeguard for ideal eye positioning.
Protective caps are included for top and bottom. Many of the 1¼" Plössl, DeLite, Delos,
Panoptic and Nagler models are parfocal for convenience.

Manufacture and Quality Control

All Tele Vue eyepiece designs are proprietary
and are manufactured in factories in Japan and Taiwan that do not make
competitive products. To assure outstanding manufacturing and flawless image
quality, our in-house NY staff performs optical and cosmetic testing on every
eyepiece made, using our patented 5" f/4 flat field "MPT" test
refractor. We even ship Japanese made eyepieces to our Chester, NY facility for
100% quality control and then re-ship them back to our Tele Vue Japan
distributor for sales in Japan. In fact, focal length control is so uniform that
we have never seen a mismatch that would affect use in a binoviewer, when using
any vintage version of a given eyepiece model with a newer one of the same
model.

Warranty

We are pleased to offer a Lifetime Limited Warranty on all eyepieces, Barlows,
Powermates, and Paracorr products for the original owner (see policy) and a 5-year warranty
for all other products for the original owner. You also have the security
of knowing that every current Tele Vue eyepiece can be repaired, serviced,
or cleaned at the factory. Tele Vue eyepieces are also great investments, returning
high resale values, when you want to upgrade or modify your collection.

Eyepiece Calculator

Input basic information about your telescope into the Eyepiece Calculator to generate a custom listing of how Tele Vue eyepieces will perform for you.

Advice

Complete specifications and selection procedure appears on our
website, and you can call Tele Vue for personal advice during
business hours.